VB6 applications are legacy these days, but sometimes you want to use an old application. Surprsingly, newer versions of Windows don't have all the core components. They can be tricky to find on the internet, so I've put a few common runtime files here.
To install the runtime files, simply open the executable. To install the OCX files, you can either use it temporarily by placing it in the same directory as the program, or permanently by copying it to your system folder. The following is a list of common system folders.
Windows 95, 98, ME (9x) - C:\Windows\System\
Windows 2000, NT - C:\Winnt\System32\
Windows XP - C:\Windows\System32
Once you find your system directory, copy the OCX into that folder. If the program still does not run, you may need to register it. Click Start→Run, and type the following:
regsvr32 mswinsck.ocx